Composite material pipe pile

Abstract

The utility model relates to the field of pipe piles, in particular to a composite material pipe pile which comprises a pile body and concrete poured in the pile body, the pile body comprises a pipe sleeve and a pile connector assembly arranged at the bottom end of the pipe sleeve, and a pile framework is arranged in the pipe sleeve; the pile connector assembly comprises an end plate, and a plurality of sleeves which are evenly distributed in a circular ring shape are arranged on the end plate. The pile framework comprises a plurality of reinforcing ribs corresponding to the sleeves and stirrups arranged on the outer sides of the reinforcing ribs, and the stirrups are arranged in the pipe sleeve in the mode that the two ends are dense and the middle is sparse. A plurality of positioning supporting pieces arranged in the axis direction of the reinforcing ribs are arranged in the reinforcing ribs. The composite material pipe pile can fully utilize the advantages of light weight, high strength, corrosion resistance, heat insulation and the like of the composite material, has good chemical corrosion resistance, electric corrosion resistance, microbial corrosion resistance and the like, can prolong the service life of the pipe pile, and reduces the maintenance cost.

Description

Technical Field

[0001] The utility model relates to the field of pipe piles, in particular to a composite material pipe pile. Background Art

[0002] In modern civil engineering, pipe piles are an important foundation support structure, and their performance directly affects the stability and safety of the entire project. Traditional pipe piles are mostly made of thin metal walls or ordinary concrete materials. Although these materials have certain strength and stability, they still have the following defects:

[0003] Poor corrosion resistance: Thin metal walls or ordinary concrete materials are susceptible to chemical corrosion, electrical corrosion, microbial corrosion, etc. in special environments, such as saline-alkali soil, wetlands, seawater, etc., which can damage the outer layer of the pile, affect the strength and stability of the pile, reduce the service life of the pile, and increase maintenance costs;

[0004] Heavy weight: The specific gravity of metal thin walls or ordinary concrete materials is large, resulting in a heavy weight of pipe piles, which increases the cost and difficulty of transportation and installation, especially in areas with complex terrain or inconvenient transportation.

[0005] Low installation efficiency: Due to the heavy weight of traditional pipe piles, a larger pile driver is required for piling. The pile driver has a heavy load, the piling speed is slow, and the piling efficiency is low, which prolongs the construction period and increases the project cost.

[0006] Large soil disturbance: Due to the large diameter of traditional pipe piles, when they are driven into the soil layer, they will cause large soil disturbance, affecting the stability of the soil, and may cause deformation or damage to surrounding buildings or structures, posing a safety hazard;

[0007] Irregular shape: During the production process of traditional prefabricated pipe piles, due to reasons such as mold installation deviation, the shape of the pipe piles may not be completely regular, affecting the installation of the clamps on the pipe piles.

[0008] Therefore, a new type of pipe pile is needed that can overcome the defects of traditional pipe piles and improve the performance and efficiency of pipe piles. Utility Model Content

[0009] The technical problem to be solved by the utility model is to overcome the defects of the above-mentioned technology and provide a composite material pipe pile.

[0010] A prestressed composite material pipe pile, comprising a pile body and concrete poured in the pile body, wherein the pile body comprises a pipe sleeve and a pile joint assembly arranged at the bottom end of the pipe sleeve, and a pile skeleton is arranged in the pipe sleeve;

[0011] The pile joint assembly comprises an end plate, on which a plurality of sleeves evenly distributed in a circular shape are provided;

[0012] The pile skeleton comprises a plurality of reinforcing ribs corresponding to the sleeve and stirrups arranged outside the reinforcing ribs, wherein the stirrups are arranged in the form of densely packed at both ends and sparsely packed in the middle in the pipe sleeve;

[0013] A plurality of positioning support members arranged along the axial direction of the reinforcing rib are arranged in the reinforcing rib.

[0014] Furthermore, the sleeve includes an external thread section and a sleeve section, and a penetrating stepped hole is provided on a side of the end plate away from the reinforcing rib, and the external thread section of the sleeve passes through the stepped hole and is locked and connected by a nut.

[0015] Furthermore, the stirrups may be of, but not limited to, spiral or parallel types.

[0016] Furthermore, a pile sleeve is provided on one side of the end plate close to the reinforcing rib, and the pipe sleeve can be inserted into the pile sleeve.

[0017] Furthermore, the positioning support member includes a positioning ring and a cushion block. The positioning ring is arranged inside a plurality of reinforcing ribs and is provided with an interface member connected to the reinforcing ribs.

[0018] Furthermore, the reinforcing ribs are FPR ribs, which can be made of glass fiber composite ribs, basalt fiber composite ribs, etc., with a number of not less than 6, evenly distributed along the circumference, one end of which is inserted into the sleeve, and the remaining positions are fixed with positioning supports; the function of the reinforcing ribs is to improve the bending, compression and pull-out resistance of the pipe pile, as well as to increase the rigidity and stability of the pipe pile;

[0019] Stirrups are annular bars made of metal or composite materials. There are two types of stirrups: spiral stirrups and general stirrups such as parallel stirrups. Stirrups are distributed densely at both ends and sparsely in the middle of the pipe pile. They are fixed to the reinforcement with metal wires to improve the shear resistance of the pipe pile. The function of stirrups is to limit the displacement of reinforcement and prevent cracks or damage to the pipe pile when it is stressed. The combination of reinforcement and stirrups can effectively improve the overall performance of the pipe pile, enabling it to withstand larger axial and lateral loads, as well as resist larger bending moments and shear forces.

[0020] The main material of the pile joint assembly is carbon steel. The sleeve on it corresponds to the distribution position of the reinforcement ribs. The inside of the sleeve is coated with epoxy resin adhesive to ensure the firm bonding of the composite reinforcement ribs and the sleeve. Different pile tips can be selected according to different soil layers and engineering requirements, including but not limited to conical pile tips, cross-shaped metal pile tips, etc., at the end plate. The function of the pile joint is to protect the composite pipe sleeve, improve the penetration of the pipe pile, so that the pipe pile can be driven into different soil layers, and improve the pull-out resistance of the pipe pile.

[0021] The positioning ring of the positioning support is made of plastic and is installed on the inner side of the reinforcement to ensure the correct position and concentricity of the reinforcement. The pad should be used in conjunction with the positioning ring to ensure the uniform thickness of the concrete protective layer and enhance its stability and supporting force. The main function of the positioning support is to connect with the reinforcement through the interface to ensure the fixation and distribution of the reinforcement in the pipe pile, and to closely contact with the inner wall of the pipe sleeve through the pad to ensure the concentric alignment of the reinforcement cage composed of the reinforcement and the stirrups with the composite material pipe sleeve and the consistency of the thickness of the protective layer. At the same time, during the concrete pouring process, the positioning piece can prevent the displacement of the reinforcement, ensure that the pile is evenly stressed, and improve the overall performance of the structure. The setting of the positioning support can effectively ensure the position and direction of the reinforcement, avoid the deflection or bending of the reinforcement, and thus improve the force performance and stability of the pile.

[0022] The concrete is C30-C60 concrete, in which 0.5-2% by volume of chopped yarn is added. The materials of the chopped yarn are basalt fiber chopped yarn, polypropylene fiber chopped yarn, glass fiber chopped yarn, polyester fiber chopped yarn, polyvinyl alcohol fiber chopped yarn, etc. The admixture of the concrete can enhance the crack resistance and toughness of the concrete, and improve the strength and durability of the concrete; the chopped yarn has the function of forming a three-dimensional fiber network in the concrete, dispersing the stress of the concrete, inhibiting the shrinkage and cracking of the concrete, improving the impact resistance and fatigue resistance of the concrete, and extending the service life of the concrete.

[0023] The utility model has the following beneficial effects:

[0024] The composite material pipe pile of the utility model can make full use of the advantages of composite materials such as light weight, high strength, corrosion resistance, and heat insulation, and has good chemical corrosion resistance, electrical corrosion resistance, and microbial corrosion resistance, which can extend the service life of the pipe pile and reduce maintenance costs;

[0025] The composite pipe pile can replace the traditional concrete pipe pile, and due to its smaller diameter, it can reduce the load of the pile driver, reduce the cost of piling, and improve the efficiency of piling; its weight is also lighter than that of traditional prefabricated pipe piles, which can reduce a lot of transportation costs.

[0026] The composite pipe pile can reduce earthwork volume, reduce soil disturbance and improve soil stability;

[0027] The pipe sleeve of the composite pipe pile has a regular shape and will not have the mold deviation of traditional prefabricated pipe piles, thereby improving the stability and bearing capacity of the photovoltaic bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of a composite material pipe pile of the utility model;

[0029] Figure 2This is a schematic diagram of a positioning support member of a composite material pipe pile of the utility model;

[0030] Figure 3 The utility model is a schematic diagram of the installation of a sleeve of a composite material pipe pile.

[0031] As shown in the figure: 1. pipe sleeve; 2. end plate; 3. sleeve; 4. reinforcing ribs; 5. stirrups; 6. positioning support; 7. stepped hole; 8. nut; 9. pile sleeve; 301. external thread section; 302. socket section; 601. positioning ring; 602. spacer; 603. interface part. DETAILED DESCRIPTION

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In the description of the embodiments of the present utility model, if a feature is referred to as being "set", "fixed", "connected" or "installed" on another feature, it may be directly set, fixed, connected to another feature, or indirectly set, fixed, connected, or installed on another feature.

[0035] In the description of the embodiments of the present utility model, if "several" is involved, it means more than one, if "multiple" is involved, it means more than two, if "greater than", "less than" or "exceed" is involved, it should be understood as not including the number itself, if "above", "below" or "within" is involved, it should be understood as including the number itself. If "first" or "second" is involved, it should be understood as being used to distinguish technical features, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0037] A prestressed composite material pipe pile, comprising a pile body and concrete poured in the pile body, characterized in that: the pile body comprises a pipe sleeve 1, a pile joint assembly arranged at the bottom end of the pipe sleeve 1, and a pile skeleton is arranged in the pipe sleeve 1;

[0038] The pile joint assembly comprises an end plate 2, on which a plurality of sleeves 3 evenly distributed in a circular shape are provided;

[0039] The pile skeleton comprises a plurality of reinforcing ribs 4 corresponding to the sleeve 3 and stirrups 5 arranged outside the reinforcing ribs 4, wherein the stirrups are arranged in the form of densely packed at both ends and sparsely packed in the middle in the pipe sleeve 1;

[0040] The reinforcing rib 4 is provided with a plurality of positioning support members 6 arranged along the axial direction of the reinforcing rib 4 .

[0041] The sleeve 3 includes an external thread section 301 and a sleeve section 302 . The end plate 2 is provided with a through stepped hole 7 on one side away from the reinforcing rib 4 . The external thread section 301 of the sleeve 3 passes through the stepped hole 7 and is locked and connected by a nut 8 .

[0042] The stirrups 5 may be of, but not limited to, spiral or parallel type.

[0043] The end plates 2 are provided with a pile hoop 9 on one side close to the reinforcing rib 4 , and the pipe sleeve 1 can be inserted into the pile hoop 9 .

[0044] The positioning support member 6 includes a positioning ring 601 and a cushion block 602 . The positioning ring 601 is arranged inside a plurality of reinforcing ribs 4 , and an interface member 603 connected to the reinforcing ribs 4 is arranged on the positioning ring 601 .

[0045] The composite pipe pile of the utility model can be widely used in various civil engineering projects, especially in some special environments and engineering conditions, and has obvious advantages. The application scope and advantages of the composite pipe pile of the utility model are mainly reflected in the following aspects:

[0046] Applicable to various soil layers: The composite material pipe pile of the utility model has good corrosion resistance because its pipe sleeve adopts composite material. It can adapt to soil layers of various chemical properties, such as saline-alkali soil, wetland, seawater, etc. It will not be corroded by acid, alkali, salt, electric current, microorganisms, etc. in the soil, thus extending the service life of the pipe pile and reducing maintenance costs;

[0047] It can resist large bending moments and shear forces without bending, deformation, cracks, etc., thus ensuring the stability and safety of the piles. At the same time, since the pipe sleeve is made of composite materials, it has good thermal insulation and can resist the thermal stress caused by temperature changes, thus avoiding the thermal expansion and contraction of the piles and ensuring the dimensional stability of the piles.

[0048] Applicable to various projects: The composite pipe piles of the utility model can meet the needs of various projects, such as bridges, roads, buildings, water conservancy, photovoltaics, etc. due to their small outer diameter, light weight and regular shape. They will not be restricted by the scale, location, form, etc. of the project, and can flexibly select appropriate pipe pile specifications and quantities to achieve the best engineering effect; at the same time, due to their light weight, the cost and difficulty of transportation and installation can be reduced, especially in some areas with complex terrain or inconvenient transportation, which is more convenient; in addition, due to their regular shape, the stability and carrying capacity of the photovoltaic bracket are improved, and the efficiency and benefits of photovoltaic power generation are increased.

[0049] The specific production method is as follows:

[0050] Step 1, pile joint assembly production: welding the end plate 2 and the pile collar 9, and installing the sleeve 3 on the end plate 2 through the nut 8 directly respectively;

[0051] Step 2, making a reinforcing bar cage: insert the longitudinal reinforcing bars 4 into the sleeve section 302 of the sleeve 3 on the pile joint assembly in sequence on the mold, and pour epoxy adhesive until it is fully cured, and use the positioning support 6 to fix the position of the reinforcing bar 4; wrap the stirrups 5 around the reinforcing bars 4 at a certain interval according to the interval between the encrypted area and the non-encrypted area, use fine tying wire to tie and fix the intersection of the reinforcing bars 4 and the stirrups 5, and use the pad 602 to install it on the positioning ring 601 to complete the making of the reinforcing bar cage;

[0052] Step 3, pipe pile assembly: put the pipe sleeve 1 on the reinforcing rib cage made in step 2 to form a pipe pile assembly;

[0053] Step 4, pipe pile pouring: place the pipe pile assembly vertically along the length direction of the pipe pile with one end of the pile joint assembly facing downward, and pour C30-C60 concrete 105 <containing 0.5-2.0% of reinforcing fiber> into the inner cavity of the pipe pile. While pouring the concrete, vibrate the pipe pile with a vibration device so that the concrete fully fills the inner cavity of the pipe pile. After the concrete 105 is fully cured and reaches the designed strength, the composite material pipe pile is obtained.

[0054] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A composite material pipe pile, comprising a pile body and concrete poured in the pile body, characterized in that: The pile body comprises a pipe sleeve (1) and a pile joint assembly arranged at the bottom end of the pipe sleeve (1); a pile frame is arranged inside the pipe sleeve (1); The pile joint assembly comprises an end plate (2), on which a plurality of sleeves (3) evenly distributed in a circular shape are provided; The pile skeleton comprises a plurality of reinforcing ribs (4) corresponding to the sleeve (3) and stirrups (5) arranged outside the reinforcing ribs (4), wherein the stirrups are arranged in the pipe sleeve (1) in a dense manner at both ends and sparsely in the middle; A plurality of positioning support members (6) arranged along the axial direction of the reinforcing rib (4) are provided in the reinforcing rib (4).

2. A composite material pipe pile according to claim 1, characterized in that: The sleeve (3) comprises an external thread section (301) and a sleeve section (302); a through stepped hole (7) is provided on the side of the end plate (2) away from the reinforcing rib (4); the external thread section (301) of the sleeve (3) passes through the stepped hole (7) and is locked and connected by a nut (8).

3. The composite material pipe pile according to claim 1, characterized in that: The stirrups (5) may be of, but not limited to, spiral or parallel type.

4. The composite material pipe pile according to claim 1, characterized in that: A pile hoop (9) is provided on one side of the end plate (2) close to the reinforcing rib (4), and the pipe sleeve (1) can be inserted into the pile hoop (9).

5. The composite material pipe pile according to claim 1, characterized in that: The positioning support member (6) comprises a positioning ring (601) and a cushion block (602). The positioning ring (601) is arranged inside a plurality of reinforcing ribs (4) and is provided with an interface member (603) connected to the reinforcing ribs (4).

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